public void SetUp()
{
blobSettings = new LeaseBlockBlobSettings
{
ConnectionString = "UseDevelopmentStorage=true",
ContainerName = "test" + Guid.NewGuid().ToString("N"),
BlobPath = "lease.blob",
ReAquirePreviousTestLease = false,
RetryCount = 2,
RetryInterval = TimeSpan.FromMilliseconds(250)
};
maximumStopDurationEstimateSeconds = 10;
var storageAccount = CloudStorageAccount.Parse("UseDevelopmentStorage=true");
var client = storageAccount.CreateCloudBlobClient();
container = client.GetContainerReference(blobSettings.ContainerName);
container.CreateIfNotExist();
leaseBlob = container.GetBlobReference(blobSettings.BlobPath);
leaseBlob.UploadByteArray(new byte[0]);
}
public static void ReleaseLease(LeaseBlockBlobSettings blobSettings, string leaseId)
{
cancellationTokenSource.Cancel();
leasingTask.Wait();
var blob = GetBlobReference(blobSettings);
try
{
blob.ReleaseLease(AccessCondition.GenerateLeaseCondition(leaseId), leaseRequestTimeout);
}
catch
{
}
finally
{
BreakLease(blob);
}
}
private static CloudBlob GetBlobReference(LeaseBlockBlobSettings blobSettings)
{
var storageAccount = blobSettings.ConnectionString == null
? new CloudStorageAccount(new StorageCredentialsAccountAndKey(blobSettings.BlobStorage, blobSettings.BlobStorageKey), blobSettings.UseHttps)
: CloudStorageAccount.Parse(blobSettings.ConnectionString);
var client = storageAccount.CreateCloudBlobClient();
var container = client.GetContainerReference(blobSettings.ContainerName);
return container.GetBlobReference(blobSettings.BlobPath);
}
public static string AquireLease(LeaseBlockBlobSettings blobSettings, int maximumStopDurationEstimateSeconds)
{
var blob = GetBlobReference(blobSettings);
if (blobSettings.ReAquirePreviousTestLease)
BreakTestLeaseIfExists(blob);
var retryCount = blobSettings.RetryCount;
var leaseId = blob.TryAcquireLease(maximumStopDurationEstimateSeconds);
while (leaseId == null && retryCount > 0)
{
Thread.Sleep(blobSettings.RetryInterval);
leaseId = blob.TryAcquireLease(maximumStopDurationEstimateSeconds);
retryCount--;
}
return leaseId;
}
